Jewel-pin setter



Sept. 9 '1924;

J. T. SHEA JEWEL PIN SETTER Filed Feb. 17. 1921 Patented Sept. 9, 1924.

UNITED STATES y. l, 1,507,199 rarrz'NTI OFFICE.

JOHN T. SHEA, OF CREST'ON, IOWA.

JEWEL-Pin sE'r'rER.

Application filed February 17, y1921. Serial No. 445,866.

To all whom t may concern:

Be it known that I, JOHN T. SHEA, a citizen of the United States, residing at Creston, in the county of Union and State of Iowa, have invented new and useful Improvements in Jewel-Pin Setters, of which the following is a specification.

My present invention relates to tools for watchmakers or watch repairers and more particularly to tools for use in thesetting of jewel pins in the roller table or balance of a watch. The primary objectsof the inven-vv tion are to provide an improved tool Vor implement of this character lwhich is simple in construction, may be handled withvr facility, yand which enables the jewel pin to be set in the roller table or balance of a watch without the necessity of removing the balance from the bridge or detaching the hair spring or roller table from the balance, thus saving much time and labor in the setting of jewel pins. l f

To these and other ends, the invention consists in certain improvements, and combinations and arrangements of parts, vall as will be hereinafter more fully described', theV novel features being pointed out particularly inthe claims attheend of the' specification.

In the accompanying drawing Figure 1 is a perspective view of a jewel pin setter constructed in accordance with the present invention, it showing the bridge, balance, hair spring and related parts in the relative positions they occupy in setting the jewel pin in the roller table.

Figure 2 is a top plan view of the tool, and

Figure 3 is a side elevation of the tool.

Similar parts are designated by the same reference characters in t-lie several views.

A simple and efficient form of the invention is shown in the accompanying drawing and will be hereinafter described in deof the balance staH 3 and alsolias one` end of the hair spring 4 attached' thereto, as usual.v In order to hold the bridge down and in properV position on the base,

a clip or equivalent holding device is 'pro vided, a spring clip 5 .being preferably used beneath which the bridge may be inserted edgewise, the clip pressing the bridge down upon the top surface of the base and retaining it in such position until it is y desired to remove the same.-

According to the present invention, the N jewel pin may be set in the roller table without the necessity of removing thelroller table orthe hair springvfrom the balance" or detachmg the balance from the bridge..

This is accomplished vby supporting the balance in an axially displaced or dissociated relation to the bridge `while the hair spring remains attached to the bridge andthe balance, in consequence ofv which the hair:

spring is drawnk away from the balance and' hence is not affected by the heat to which the rollerftable is subjected inthe setting of the jewel pin. In the construction shown, the balanceis supported with the parts assosor ciated therewith, in the relative positions described, by a clamp which comprises a pair of members and 7, one or both composed preferably of copper Vor other good heat-conducting material, one of these mem opposite flat faces of the roller table 12 at one side. of the balance staff, leaving the vjewel pin 13 or its receiving socket readily accessible to the operator. Preferably, a

spring 14 acts on the clamp members 6 and .7 to maintain them in engagement with the roller table, thus leaving both-hands of the operator unhampered in the setting of the jewel pin. The ends 15 and 16 serve as finger pieces to be pressed together and separate the gripping ends of the clamp for the purpose of inserting or removing a balance.

The clamp for the roller table occupies such a position relatively to the base or support which holds the bridge that, when the roller table of a balance is engaged by the clamp, the balance will be displaced axially relatively to the bridge, the adjacent end of the balance staff being withdrawn from its bearing in the bridge, and the haii" spring being drawn out axially and away from the balance, the hair spring remaining attached to the balance and bridge and being withdrawn from the influence of the heat to which the roller table is usually subjected in order to heat and soften the shellac or other cement employed in securing the jewel pin in its socket in the roller table. One ot the clamp members, the member 6 in the presentinstance, is provided with a laterally projecting enlarged portion to receive heat from a lamp or other heating device and supply such heat to the roller table.

The present invention enables jewel pins to be set easily and with `facility and it saves the time and labor heretofore expended in detaching, replacing and readjusting the hair spring, or removing and replacing the roller table, and it avoids distortion of the hair spring, either from the effects of heat, or from handling the parts.

I claim as my invention l. A jewel pin setter comprising a base, means to hold the bridge in position thereon, and means secured to the rbase and occupying a fixed position above it to engage, the roller table and to hold the balance in axially displaced relation with the bridge, said means being adapted to app-ly heat to the roller table.

2. A jewel pin setter comp-rising a base having means to hold the bridge in posituting heat applying means for the roller table.

3. A jewel pin setter comprising a base having means to hold the bridge in position thereon, and means mounted in lixed position on said base and having an overhanging portion above the base for holding the balance in dissociated relation with the bridge, while the hair spring connecting the bridge and balance is drawn away trom the latter.

4. A jewel pin setter comprising a base provided with a bridge holding member, and a clamp rigidly mounted in relatively fixed position on the base to overlie a bridge thereon and operative to engage the roll-er table and hold the bala-nce in axially displaced relation'with the bridge.

5. A jewel pin setter' comprising a base having bridge holding means thereon, and a clamp embodying cooperative members, one of which is rigidly mounted in relatively fixed position on said base, said members being adapted to engage the o-pposite facesl f JOHN T. SHEA. lVitnesses:

H. E. BEVERLAND, Ix. H. BAKER. 

